Annotate Data Points with Tooltips and Markers
Create your own tooltips and data-point markers in charts and add custom text. Create a tooltip to specify which details appear when you hover over any data point. To annotate a specific data point, add a marker and, if it needs more attention, make it blink.
The tooltips and markers appear when you hover over the data point. Check it out.
Add tooltips to any chart. You can add a marker to any chart, except sankey, origami, angular gauge, and rating. To add tooltips and markers, edit the dashboard, select the chart, and then set the widget properties under the Tooltip and Marker sections.